1. (a) Kiran purchases an article for Rs. 5,400 which includes 10% rebate on the marked price and 20% sales tax on the remaining price. Find the marked price of the article.   2. (b) If 3x + 5y 3x − 5y = 7 3 , find x : y. (Leave no spaces around the : (colon) symbol.)   3. (c) A person invests Rs. 10,000 for two years at a certain rate of interest compounded annually. At the end of one year this sum amounts to Rs. 11,200. Calculate :- (i) the rate of interest per annum.   4. (ii) the amount at the end of the second year. (Type in the answers separated by commas. Leave no spaces around the commas.)